Pith Number

pith:2RPBAKMD

pith:2018:2RPBAKMDQNRTQZAWWEROQ4ESIQ

not attested not anchored not stored refs pending

Water Residence Time Estimation by 1D Deconvolution in the Form of a l2-Regularized Inverse Problem With Smoothness, Positivity and Causality Constraints

Alina G. Meresescu, Fran\c{c}ois Landais, Fr\'ed\'eric Schmidt, Matthieu Kowalski

arxiv:1803.07574 v1 · 2018-03-20 · eess.SP

Open paper page JSON Open Graph Bundle Merged state Verified badge What is a Pith Number?

Add to your LaTeX paper

\usepackage{pith}
\pithnumber{2RPBAKMDQNRTQZAWWEROQ4ESIQ}

Prints a linked badge after your title and injects PDF metadata. Compiles on arXiv. Learn more · Embed verified badge

Record completeness

1 Bitcoin timestamp

2 Internet Archive

3 Author claim open · sign in to claim

4 Citations open

5 Replications open

✓ Portable graph bundle live · download bundle · merged state

The bundle contains the canonical record plus signed events. A mirror can host it anywhere and recompute the same current state with the deterministic merge algorithm.

Receipt and verification

First computed	2026-05-18T00:20:29.521210Z
Builder	pith-number-builder-2026-05-17-v1
Signature	Pith Ed25519 (`pith-v1-2026-05`) · public key
Schema	pith-number/v1.0

Canonical hash

d45e1029838363386416b122e870924408ec0395ad4350e00320435fbc6d6e0a

Aliases

arxiv: 1803.07574 · arxiv_version: 1803.07574v1 · doi: 10.48550/arxiv.1803.07574 · pith_short_12: 2RPBAKMDQNRT · pith_short_16: 2RPBAKMDQNRTQZAW · pith_short_8: 2RPBAKMD

Agent API

Resolver JSON Graph JSON Events JSON Schema Signing key

Verify this Pith Number yourself

curl -sH 'Accept: application/ld+json' https://pith.science/pith/2RPBAKMDQNRTQZAWWEROQ4ESIQ \
  | jq -c '.canonical_record' \
  | python3 -c "import sys,json,hashlib; b=json.dumps(json.loads(sys.stdin.read()), sort_keys=True, separators=(',',':'), ensure_ascii=False).encode(); print(hashlib.sha256(b).hexdigest())"
# expect: d45e1029838363386416b122e870924408ec0395ad4350e00320435fbc6d6e0a

Canonical record JSON

{
  "metadata": {
    "abstract_canon_sha256": "16a0b4a6dc987dce6a70eae924028d5c3d61c4394d55d68f0f469b90de0550f3",
    "cross_cats_sorted": [],
    "license": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
    "primary_cat": "eess.SP",
    "submitted_at": "2018-03-20T18:00:35Z",
    "title_canon_sha256": "73f5a1aa0039d6dcc1d7af07940cbb4cc0f07ae663254d07b074db743d606b28"
  },
  "schema_version": "1.0",
  "source": {
    "id": "1803.07574",
    "kind": "arxiv",
    "version": 1
  }
}